/Engine/Plugins/Editor/ObjectMixer/ObjectMixer/Source/ObjectMixer/Public/Views/List/SObjectMixerEditorList.h
Only adds properties that pass a series of tests, including having only one unique entry in the column list array.
bool AddUniquePropertyColumnInfo ( [FProperty](API\Runtime\CoreUObject\UObject\FProperty) * Property, const bool bForceIncludeProperty, const [TSet](API\Runtime\Core\Containers\TSet)< [FName](API\Runtime\Core\UObject\FName) > & PropertySkipList )